hook-frida/hook_conversions.js

console.log("Script loaded successfully");
// hook_okhttp_client()
if (Java.available) {
    hook_json()
    Java.perform(function () {
        try {
            var OkHttpClient = Java.use("okhttp3.OkHttpClient");
            console.log(OkHttpClient.toString())
            if (OkHttpClient != null){
                hook_okhttp_client();
                log_info("OkHttp detected in the app");
            }
        } catch (e) {
            log_info("OkHttp not detected in the app");
        }
    });
    Java.perform(function () {
        log_info("start hook java.net.URL");
        var URL = Java.use('java.net.URL');
        URL.$init.overload('java.lang.String').implementation = function (spec) {
            // console.log("URL request:" + spec)
            log_info("URL request: " + spec)
            if (spec.includes("appsflyer")) {
                // console.log("URL request: " + spec);
                if (spec.includes("conversions")) {
                    var stackTrace = Java.use('java.lang.Exception').$new().getStackTrace().toString();
                    // console.log(stackTrace);
                }
            }
            return this.$init(spec);
        };
    });
}

function printMethods(className) {
    log_info("start print methods.")
    var jclass = Java.use(className);
    var methods = jclass.class.getDeclaredMethods();
    console.log("Printing methods of " + className + ":\n");
    methods.forEach(function (method) {
        // console.log(method);
        log_info("The methods under the class" + className + " are: " + method);
    });
}

function hook_okhttp_client() {
    if (Java.available) {
        Java.perform(function () {
            log_info("start hook_okhttp_client.")
            try {
                var OkHttpClient = Java.use("okhttp3.OkHttpClient");
                // log_info("OkHttpClient: " + OkHttpClient.toString());
                var class_name = OkHttpClient.$className;
                console.log(class_name+ "-------")
                printMethods(OkHttpClient.toString());
                OkHttpClient.newCall.overload('okhttp3.Request').implementation = function (request) {
                    var requestUrl = request.url();
                    if (requestUrl) {
                        console.log("OkHttp Request URL: " + requestUrl.toString());
                    } else {
                        console.log("OkHttp Request URL is not available");
                    }
                    // console.log("OkHttp Request Headers: " + request.headers().toString());

                    // if (request.method() == "POST") {
                    //     console.log("OkHttp Request Body: " + request.body().contentType().toString());
                    // }

                    var call = this.newCall(request);
                    var response = call.execute();
                    console.log("OkHttp Response: " + response.body().string());
                    return call;
                };

            } catch (e) {
                console.log("Error hooking OkHttp: " + e);
            }
        });
    }
}

function hook_HttpURLConnection_stream() {
    console.log("start hook_HttpURLConnection_stream")
    if (Java.available) {
        Java.perform(function () {
            var HttpURLConnection = Java.use("java.net.HttpURLConnection");

            HttpURLConnection.getOutputStream.implementation = function () {
                var outputStream = this.getOutputStream();
                var OutputStreamWrapper = Java.use("java.io.OutputStream");

                var newOutputStream = Java.registerClass({
                    name: "CustomOutputStream",
                    superClass: OutputStreamWrapper,
                    methods: {
                        write: function (buffer, byteOffset, byteCount) {
                            var data = Array.prototype.slice.call(buffer.slice(byteOffset, byteOffset + byteCount));
                            console.log("Request data: " + String.fromCharCode.apply(null, data));
                            outputStream.write(buffer, byteOffset, byteCount);
                        }
                    }
                });

                return newOutputStream.$new(outputStream);
            };

            HttpURLConnection.getInputStream.implementation = function () {
                var inputStream = this.getInputStream();
                var InputStreamWrapper = Java.use("java.io.InputStream");

                var newInputStream = Java.registerClass({
                    name: "CustomInputStream",
                    superClass: InputStreamWrapper,
                    methods: {
                        read: function (buffer, byteOffset, byteCount) {
                            var bytesRead = inputStream.read(buffer, byteOffset, byteCount);
                            if (bytesRead != -1) {
                                var data = Array.prototype.slice.call(buffer.slice(byteOffset, byteOffset + bytesRead));
                                console.log("Response data: " + String.fromCharCode.apply(null, data));
                            }
                            return bytesRead;
                        }
                    }
                });

                return newInputStream.$new(inputStream);
            };
        });
    }

}


function hook_retrofit() {
    Java.perform(function () {
        var retrofitBuilder = Java.use("retrofit2.Retrofit$Builder");
        retrofitBuilder.build.implementation = function () {
            var retrofit = this.build();
            var httpClient = retrofit.callFactory().clone();
            httpClient.interceptors().add(new Java.use('okhttp3.Interceptor')({
                intercept: function (chain) {
                    console.log("HTTP Request -> " + chain.request().toString())
                    var response = chain.proceed(chain.request());
                    console.log("HTTP Response -> " + response.toString());
                    return response;
                }
            }))
            return retrofit.newBuilder()
                .callFactory(httpClient)
                .build();
        }
    });
}


function hook_json() {
    Java.perform(function () {
        var JSONObject = Java.use('org.json.JSONObject');
        JSONObject.toString.overload().implementation = function () {
            var result = this.toString.call(this);
            // console.log("Serialized JSONObject: " + result);
            log_info("Serialized JSONObject: " + result)
            return result;
        };
    });
}


function log_info(messages) {
    const now = new Date();
    const year = now.getFullYear();
    const month = String(now.getMonth() + 1).padStart(2, '0'); // Months are 0-based
    const day = String(now.getDate()).padStart(2, '0');
    const hours = String(now.getHours()).padStart(2, '0');
    const minutes = String(now.getMinutes()).padStart(2, '0');
    const seconds = String(now.getSeconds()).padStart(2, '0');
    const milliseconds = String(now.getMilliseconds()).padStart(3, '0');

    const timestamp = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}:${milliseconds}`;

    console.log(`${timestamp} - ${messages}`);
}